Enhancing liquid jet erosion
US4474251A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1981 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Nov 25, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15D1/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Process and apparatus for enhancing the erosive intensity of a high velocity liquid jet when the jet is impacted against a surface for cutting, cleaning, drilling or otherwise acting on the surface. A preferred method comprises the steps of forming a high velocity liquid jet, oscillating the velocity of the jet at a preferred Strouhal number, and impinging the pulsed jet against a solid surface to be eroded. Typically the liquid jet is pulsed by oscillating the velocity of the jet mechanically or by hydrodynamic and acoustic interactions. The invention may be applied to enhance cavitation erosion in a cavitating liquid jet, or to modulate the velocity of a liquid jet exiting in a gas, causing it to form into discrete slugs, thereby producing an intermittent percussive effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.